Deep-sea researchers have completed the first full-size digital scan of the Titanic, showing the entire wreck in unprecedented detail and clarity, the companies behind a new documentary on the wreck said Thursday. Using two remote operated submersibles, a team of researchers spent six weeks last summer in the North Atlantic mapping the whole shipwreck and the surrounding 3-mile debris field, where personal belongings of the ocean liner's passengers such as shoes and watches were scattered.